Also listed on TotalEnergies Solar Intl, an earlier holder on the record. The recorded assignments below show how it moved.
Term ends Apr 8, 2038 · High confidence
20-year base term ends Jan 16, 2038
Held by TotalEnergies OneTech
Filed Jan 16, 2018 as application 15/872,558 · Granted Feb 25, 2020
Base term plus 82 days of patent term adjustment (USPTO delay)
Today
2018
2038
Clock starts
Jan 16, 2018
Jan 16, 2018
Term ends
Apr 8, 2038
Apr 8, 2038
Granted
Feb 25, 2020
Feb 25, 2020
base term
patent term adjustment
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
82
Days of term adjustment
Read from the USPTO patent term adjustment record, not recalculated here.
None
Terminal disclaimer
No disclaimer on this record.
1 of 3
Maintenance fees paid
Three maintenance fees fall due, at 3.5, 7.5 and 11.5 years from grant. This counts the ones the record shows paid.
This patent's term runs 82 days past its 20-year base term on prosecution delay. 1 of 3 maintenance fees is paid so far. Confidence: High. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Jan 16, 2018, when this application, 15/872,558, was filed | Jan 16, 2038 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | +82 days, USPTO patent term adjustment record | Apr 8, 2038 | High confidence |
| Terminal disclaimer cap | None on record | no cap applied | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 3 maintenance fees paid | In force | High confidence |
| Computed term end | The steps above, in order | Apr 8, 2038 | High confidence |
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| May 15, 2018 Reel 45810, frame 107 | Zeng, Wente | Total Solar International | Assignment of Assignor's Interest |
| May 15, 2018 Reel 45810, frame 190 | Vanouni, Maziar; Lu, Ning | North Carolina State University | Assignment of Assignor's Interest |
| Oct 4, 2024 Reel 69114, frame 445 | Total Solar International | Total Solar International | Change of Name |
| Nov 7, 2024 Reel 69313, frame 571 | Total Solar International | TotalEnergies Solar Intl | Change of Name |
| Nov 20, 2024 Reel 69335, frame 246 | TotalEnergies Solar Intl | TotalEnergies OneTech | Assignment of Assignor's Interest |
| Dec 3, 2024 Reel 69475, frame 879 | Total Solar International | Total Solar Intl | Corrective Assignment to Correct the Correct the Name and Address of the Assignee Previously Recorded at Reel: 69114 Frame: 445. Assignor(S) Hereby Confirms the Change of Name. |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
Free plan: 3 watched companies. Pro: unlimited.
Alerts on its grants, lapses and transfers.
What's changing
Apr 2038
Term ends Apr 8, 2038. Maintenance fees still fall due before then
Note
The 82 days of patent term adjustment (USPTO delay) are read from the USPTO record, not recalculated by us
Citations
2
later US patents cite this one
That is below the median of utility patents granted in 2020 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.
In force means the term is running and no lapse is on record. It is not a finding that the patent is valid.